This property lets you configure the control so that row heights are automatically adjusted to fit their contents whenever the contents change. If WrapMode is enabled, row heights are also adjusted whenever column widths change. Some sizing modes let you limit the size adjustment to the currently displayed rows in order to increase performance.

Only rows with a Visible property value of true are resized automatically, and changing the visibility of a row does not cause resizing to occur. Additionally, when rows are set to automatically resize, the user cannot adjust the row heights with the mouse.